US9823403B2 - Light guiding body and lighting system - Google Patents

Light guiding body and lighting system Download PDF

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Publication number
US9823403B2
US9823403B2 US14/627,456 US201514627456A US9823403B2 US 9823403 B2 US9823403 B2 US 9823403B2 US 201514627456 A US201514627456 A US 201514627456A US 9823403 B2 US9823403 B2 US 9823403B2
Authority
US
United States
Prior art keywords
plane
point
light
guiding body
light guiding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related, expires
Application number
US14/627,456
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English (en)
Other versions
US20150268398A1 (en
Inventor
Hiroshi Ohno
Mitsuaki Kato
Tomonao Takamatsu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Assigned to KABUSHIKI KAISHA TOSHIBA reassignment KABUSHIKI KAISHA TOSHIBA ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: TAKAMATSU, TOMONAO, KATO, MITSUAKI, OHNO, HIROSHI
Publication of US20150268398A1 publication Critical patent/US20150268398A1/en
Application granted granted Critical
Publication of US9823403B2 publication Critical patent/US9823403B2/en
Expired - Fee Related legal-status Critical Current
Adjusted expiration legal-status Critical

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/002—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • G02B6/0031—Reflecting element, sheet or layer
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0036—2-D arrangement of prisms, protrusions, indentations or roughened surfaces
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0066—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
    • G02B6/0073—Light emitting diode [LED]
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0083—Details of electrical connections of light sources to drivers, circuit boards, or the like
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0085—Means for removing heat created by the light source from the package
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • G02B6/0028—Light guide, e.g. taper
US14/627,456 2014-03-18 2015-02-20 Light guiding body and lighting system Expired - Fee Related US9823403B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2014-055651 2014-03-18
JP2014055651A JP2015179579A (ja) 2014-03-18 2014-03-18 導光体および照明装置

Publications (2)

Publication Number Publication Date
US20150268398A1 US20150268398A1 (en) 2015-09-24
US9823403B2 true US9823403B2 (en) 2017-11-21

Family

ID=52577603

Family Applications (1)

Application Number Title Priority Date Filing Date
US14/627,456 Expired - Fee Related US9823403B2 (en) 2014-03-18 2015-02-20 Light guiding body and lighting system

Country Status (4)

Country Link
US (1) US9823403B2 (ja)
EP (1) EP2921774A1 (ja)
JP (1) JP2015179579A (ja)
CN (1) CN104932049A (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200116916A1 (en) * 2017-01-03 2020-04-16 Boe Technology Group Co., Ltd. Light guide plate, backlight module and display device

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5781196B1 (ja) 2014-05-30 2015-09-16 株式会社東芝 電子機器
CN107101178B (zh) 2016-02-19 2020-01-14 法雷奥照明湖北技术中心有限公司 光导组件以及照明和/或信号指示装置
CN108594357B (zh) * 2018-05-11 2020-07-17 深圳市帝显电子有限公司 一种导光板、背光模组及显示装置

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20010012157A1 (en) 2000-02-08 2001-08-09 Minebea Co., Ltd. Spread illuminating apparatus
GB2443215A (en) 2006-10-24 2008-04-30 Sharp Kk An illumination system having a light source and a light guide
US20080260328A1 (en) 2007-04-20 2008-10-23 3M Innovative Properties Company Led light extraction bar and injection optic for thin lightguide
CN101666466A (zh) 2009-09-30 2010-03-10 陈蛟 一种导光板、导光装置以及发光装置
US20120139403A1 (en) 2010-12-06 2012-06-07 3M Innovative Properties Company Solid state light with optical guide and integrated thermal guide
US8206017B2 (en) * 2009-11-03 2012-06-26 Automotive Lighting Reutlingen Gmbh Illumination device for a motor vehicle
US20120320580A1 (en) 2011-06-15 2012-12-20 Lite-On Technology Corporation Light-guiding cover and illumination device having the same
US20130003398A1 (en) * 2011-06-29 2013-01-03 Valeo Vision Light guide with decoupling portion and shield collecting the decoupled rays
US20130051076A1 (en) 2011-08-25 2013-02-28 Hayashi Engineering Inc. Planar lighting device
US20130114293A1 (en) * 2011-11-09 2013-05-09 Takeshi Morino Surface light source device
US20130162139A1 (en) 2011-12-22 2013-06-27 Foxconn Technology Co., Ltd. Light emitting diode bulbs with high heat dissipating efficiency
US20130223077A1 (en) 2012-02-27 2013-08-29 Kabushiki Kaisha Toshiba Lighting apparatus
US20130235608A1 (en) * 2012-03-09 2013-09-12 Coretronic Corporation Light source module
JP2013229195A (ja) 2012-04-26 2013-11-07 Hitachi Appliances Inc 電球型照明装置

Patent Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20010012157A1 (en) 2000-02-08 2001-08-09 Minebea Co., Ltd. Spread illuminating apparatus
GB2443215A (en) 2006-10-24 2008-04-30 Sharp Kk An illumination system having a light source and a light guide
CN101558352A (zh) 2006-10-24 2009-10-14 夏普株式会社 照明系统和包括照明系统的显示器
US20100296268A1 (en) 2006-10-24 2010-11-25 Stephen James Fasham Illumination system and display including same
US20080260328A1 (en) 2007-04-20 2008-10-23 3M Innovative Properties Company Led light extraction bar and injection optic for thin lightguide
CN101666466A (zh) 2009-09-30 2010-03-10 陈蛟 一种导光板、导光装置以及发光装置
US8206017B2 (en) * 2009-11-03 2012-06-26 Automotive Lighting Reutlingen Gmbh Illumination device for a motor vehicle
US20120139403A1 (en) 2010-12-06 2012-06-07 3M Innovative Properties Company Solid state light with optical guide and integrated thermal guide
US20120320580A1 (en) 2011-06-15 2012-12-20 Lite-On Technology Corporation Light-guiding cover and illumination device having the same
US20130003398A1 (en) * 2011-06-29 2013-01-03 Valeo Vision Light guide with decoupling portion and shield collecting the decoupled rays
US20130051076A1 (en) 2011-08-25 2013-02-28 Hayashi Engineering Inc. Planar lighting device
US20130114293A1 (en) * 2011-11-09 2013-05-09 Takeshi Morino Surface light source device
US20130162139A1 (en) 2011-12-22 2013-06-27 Foxconn Technology Co., Ltd. Light emitting diode bulbs with high heat dissipating efficiency
US20130223077A1 (en) 2012-02-27 2013-08-29 Kabushiki Kaisha Toshiba Lighting apparatus
JP2013175406A (ja) 2012-02-27 2013-09-05 Toshiba Corp 照明装置
US20130235608A1 (en) * 2012-03-09 2013-09-12 Coretronic Corporation Light source module
JP2013229195A (ja) 2012-04-26 2013-11-07 Hitachi Appliances Inc 電球型照明装置

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
Extended European Search Report dated Aug. 5, 2015 in Patent Application No. 15151920.4.
Office Action dated Jul. 5. 2017, in Chinese Patent Application No. 201510072394.6.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200116916A1 (en) * 2017-01-03 2020-04-16 Boe Technology Group Co., Ltd. Light guide plate, backlight module and display device
US11262493B2 (en) * 2017-01-03 2022-03-01 Boe Technology Group Co., Ltd. Light guide plate, backlight module and display device

Also Published As

Publication number Publication date
CN104932049A (zh) 2015-09-23
US20150268398A1 (en) 2015-09-24
EP2921774A1 (en) 2015-09-23
JP2015179579A (ja) 2015-10-08

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Effective date: 20211121